Well, the 2002 was different.cowboyjwc said:Now I'm in the 2002.
The supply pipes are an integral feature to a hydromassage tub. Without them, the tub would be useless.2002 680.74 Bonding. All metal piping systems, metal parts of electrical equipment, and pump motors associated with the hydromassage tub shall be bonded together using a copper bonding jumper, insulated, covered, or bare, not smaller than 8 AWG solid. Metal parts of listed equipment incorporating an approved system of double insulation and providing a means for grounding internal nonaccessible, non–current-carrying metal parts shall not be bonded.
Metal piping systems supplying the hydromassage tub are associated with the tub. Under the 2002, the piping supplying the tub would be required to be bonded to the pump motor.
That's changed under the 2005:
Now, the pump motor is not required to be bonded to the supply system at all. The supply system has nothing to do with the circulating water.2005 680.74 Bonding. All metal piping systems and all grounded metal parts in contact with the circulating water shall be bonded together using a copper bonding jumper, insulated, covered, or bare, not smaller than 8 AWG solid.
I agree with what I think you're saying - it seems the heater would need to be bonded to the motor with a #8 jumper, all under the tub where the user can't access them. While going against the panel statement, I'd say it is an enforceable view of the code text.cowboyjwc said:But does the water run through the heater so that it can be heated by electric coils and is that heater not part of the circulating system?
Do these heaters come with a bonding lug?
110.3(B) does confirm this view:cowboyjwc said:I do agree that if the installation instructions say that they are to be bonded, then they should be bonded.
(B) Installation and Use. Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.
Don had an interesting comment in the other thread about this.
(It kinda stinks having two discussions going at the same time about the same thing. )